.box {
    display: flex;
    background-color: white;
    /* flex-direction: row;
    flex-wrap: nowrap; */
    flex-flow: row wrap-reverse;
}
.box-item {
    width: 200px;
    height: 200px;
    line-height: 200px;
    vertical-align: middle;
    margin: 5px;
    background-color: #ffd200;
    font-size: 100px;
    color: white;
    text-align: center;
}